Flywheel rotating tool



Oct. 21, 1941.

` FLYWHEEL ROTATING TOOL Filed March 26, 1940. 2 Sheets-Sheet l nvenor 045575@ I? oHLA/VDER,

c. P. BOHLANDE'R 2,259,922

Patented Oct. 21, 1941 UNITED STATES PATENT OFFICE FLYWHEEL ROTATING TOOL l Chester P. Bohlander, Pritchett, Colo. vApplicationv March 26, 1940, Serial No. 326,070

' (c1. s1-9o) 4 Claims.

The present invention relates to tools for ro-A tating the fly-wheels of internal combustion engines while the engine is being inspected or repaired.

An important object of the present invention is to provide a tool of this character embodying jaws may be selectively used for engaging and rotating the fly-wheel infone direction.

A still further object is to provide a" tool of this character of simple and practical construction, which is strong and durable, relatively inadapted for the purposes for which the same is intended.

Other objects vand advantages reside in the details ofconstruction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like, parts throughout, and in `which` Figure l is a fragmentary front elevational view of a y-wheel showing the tool in position for engaging the fly-wheel.

Figure 2 is an edge elevational view thereof.

Figure 3 is a top plan view of the tool.

Figure 4 is a fragmentary vsectional view taken substantially on a 'line 4-4 of Figure 3.

Figure 5 is a vertical sectional view through the handle of the tool taken substantially on a line 5-5 of Figure 4, and

Figure 6 is a transverse sectional view through the handle taken substantially on aline 6-6 of Figure 4. v

Referring now to the drawings in detail, the numeral 5 designates the handle portion of the tool which is constructed of a pair of duplicate plates 6 and 1, the handle including a handgrip portion 8 in which the sections 6 and 1 are secured atwise to each other by means of rivets or the like 9, the other ends of the handleportions 6 and I being spaced substantially in pari allelism and secured in spaced relation by means of rivets,I II. A

One of the rivetsI I 'is positioned adjacent the outer end of the handle and is provided with.a substantially wedge-shaped spacing member I2 expensive to manufacture and otherwise well .more clearly shown in Figure 4 of the drawings.

The adjacent edge portion of the handle vmembers 6 and 1 are of arcuate form as shown at I5 and adaptedto bear against the edge surface of the fly-wheel at opposite sides of the ring gear I3. 4

Portions of the handle membersi and 1 are struck inwardly as-shown at I6 tol provide inwardly projecting lugs having their inner edges in abutting relation and cooperating to form y guides for a U-shaped spring retaining member II having a coil spring I8 positioned therein, the upper end of the vcoil 'spring bearing against a block' I9 which abuts the wedge-shaped spac-l projecting extremities 22 for engaging between the teeth of the "ily-wheel. i As more clearly illustrated in Figure 4 of the drawings, the inner end lportion of the jaw 20 is shorter than the inner end of the jaw 2l, where- 4 by to permit said jaw 20 to be swung outwardly into the lowermcst dotted -line position as shown' in Figure 4, for disengagement from the spring guide i i fly-wheel I 4 through the use of only the jaw 2l.

When both of the jaws are moved into iiyywheel engaging position, as shown by the full lines in Figurey l of the drawings, thevfiy-wheel may be moved in a back and forth `motion to facilitate proper adjustment of the engine.

It is believed the details of construction, manner of operation and advantages of the devicef will be readily understood from the foregoing I. without further detailed explanation.

adapted for engagement between the teeth of the ring gear I3 formed on the fly-wheel Having thus described the invention, what I claim is:

1. A tool for rotating a toothed ily-wheel comprising a handledncluding spaced parallel sides at its outer portion, fixed means at the outer portion of the handle for engaging the teeth of the y-wheel, a pair of jaws pivoted inter- /mediate their ends between said parallel sides of the handle and .projecting outwardly from opposite sides of the'handle. the' outer4 ends of the jaws being adapted for gripping engagement I4, as with the ily-wheel, spaced guide members be- II and thus enable the rotation of the' vL-shaped jaws pivoted to the handle intermediate the ends of the jaws and projecting from opposite sides of the handle, the outer ends ofV the jaws being adapted for gripping engage; l

ment with the vtoothed edge of the fly-wheel, iixed means on the handle for engaging the flywheel teeth to cooperate with. the jaw and spring means slidably carried by the handle, the inner ends of said jaws projecting inwardly under one end of theV spring means .at opposite directions and responsive -to action by the spring means for closing the outer ends of the jaws against the fly-wheel, one oi' said inner ends ot the jaws being movable independentlyoi the other jaw out of the path) of the spring means upon a predetermined retracting movement of said spring means.

3. A tool for rotating a toothed ily-wheel comprising a handle, a xed means on the handle for engaging the teeth of the ily-wheel, independent members pivoted on the handle and .projecting from opposite sides of the handle `with one end of each of said members adapted for movement into and out o1' ily-wheel gripping engagement and spring means abutting said xed 4means and engaging the other ends of said members to urge the latter into engagement with the ily-wheel.

4. A tool for rotating a toothed fly-wheel comprising a handle, xed means on the handle for engaging the teeth of the fly-wheel, a pair of substantially L-shaped jaws pivoted on the handle and projecting from opposite sides thereof with one end of each of said jaws adapted for movement into and out of fly-wheel gripping engagement 'and spring means abutting said iixed means andk engaging the other 'ends of said jaws to urge the latter into engagement with the ily-wheel.

CHESTER P. BOHLANDER. 

